function checkEmail(email)
{
	var regex = /^[a-zA-Z0-9._-]+@([a-zA-Z0-9.-]+\.)+[a-zA-Z0-9.-]{2,4}$/;
	return regex.test(email);
}

function checkZip(zip)
{
	var regex1 = /^[0-9]{5}$/;
	var regex2 = /^[0-9]{5}-[0-9]{4}$/;
	return regex1.test(zip) || regex2.test(zip);
}

function checkPhone(phone)
{
	var regex = /^[\s\(\)0-9.-]{7,}$/;
	return regex.test(phone);
}